The Giant Impact Hypothesis posits a Mars-sized planetesimal, Theia, collided with Earth approximately 4.5 billion years ago, resulting in the formation of the Moon from the ejected debris. Multiple ...

Few topics have been as contentious among both scientists and laypeople as the age of the Earth. Many scientists are people of faith, but from the moment the ancients found seashell fossils high in ...

Smithsonian researcher Wriju Chowdhury is part of an expedition searching for 4-billion-year-old crystals that could uncover the secrets behind Earth’s early history Emma Saaty A remote geologic ...

Millions of people around the world will pause on Tuesday, at least for a moment, to mark Earth Day. It's an annual event founded by people who hoped to stir activism to clean up and preserve a planet ...

"This is the story of Earth like you’ve never seen it before—from the first spark of life to prehistoric monsters to the rise of humans… and all the weird stuff in between." We live on a magnificently ...

P erihelion – or the Earth's closest approach to our host star – will take place on January 3, 2026. At this point, our ...

Earth Day highlights the actions we can take to address environmental problems. When you purchase through links on our site, we may earn an affiliate commission. Here’s how it works. Earth Day is a ...

The new dataset, published in Earth System Science Data by 16 scientists, shows a significantly cooler Earth from the late ...